Issue ReferenceError: char is not defined

[Pushkraj-Space]

I am getting char is not defined while parsing the below mui css.

& .MuiTouchRipple-childPulsate {
position: absolute;
/* @noflip */ <---- This is the issue
left: 0px;
top: 0;
animation-name: animation-f6tr5a;
animation-duration: 2500ms;
animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
animation-iteration-count: infinite;
animation-delay: 200ms;
}

[Andarist]

This works just fine for me.

stylis.compile(`& .MuiTouchRipple-childPulsate {
position: absolute;
/* @noflip */
left: 0px;
top: 0;
animation-name: animation-f6tr5a;
animation-duration: 2500ms;
animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
animation-iteration-count: infinite;
animation-delay: 200ms;
}

`)

Please provide a runnable repro case of your problem if you want to get further help with this.